22291163 has 4 divisors (see below), whose sum is σ = 23260368. Its totient is φ = 21321960.

The previous prime is 22291151. The next prime is 22291177. The reversal of 22291163 is 36119222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22291163 - 2⁸ = 22290907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22291183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484568 + ... + 484613.

It is an arithmetic number, because the mean of its divisors is an integer number (5815092).

Almost surely, 2^22291163 is an apocalyptic number.

22291163 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22291163 is a deficient number, since it is larger than the sum of its proper divisors (969205).

22291163 is an equidigital number, since it uses as much as digits as its factorization.

22291163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969204.

The product of its digits is 1296, while the sum is 26.

The square root of 22291163 is about 4721.3518191298. The cubic root of 22291163 is about 281.4346561521.

The spelling of 22291163 in words is "twenty-two million, two hundred ninety-one thousand, one hundred sixty-three".